Spring bed-bottom.



G. MAFERA. SPRING BED BOTTOM. APPLIOATION FILED DBO. a0, 1907.

Patented June 14, 1910.-

Amaflzw B GRAHAM ca FHOYO-UTHOGRAPNERS, wnsmusrom c r GUY MAFERA, OFBOSTON, MASSACHUSETTS.

SPRING BED-BOTTOM.

Specification of Letters Patent.

Application filed December 30, 1907.

Patented June 14, 1910.

Serial No. 408,473.

To all whom it may concern:

Be it known that I, GUY MAFERA, of Boston, in the county of Suifolk andState of Massachusetts, have invented certain new and usefulImprovements in Spring Bed- Bottoms, of which the following is aspecification.

This invention has relation to spring bed bottoms and relates moreparticularly to that class in which the fabric consists of a series ofinterlocked elliptical or relatively flat helices.

On the accompanying drawings, Figure 1 represents in plan View a portionof a bed bottom embodying the invention. Fig. 2 represents a sideelevation of the same. Fig. 3 represents an end elevation. Fig. 4represents a section on the line 44 of Fig. 2. Fig. 5 represents theframe.

Referring to said drawings, I have shown in Fig. 5, a convenient form offrame which may be utilized in connection with the invention. Itconsists of side bars a a which are tubular and which may be made of gaspipe. Each end of each side bar has a clip or hollow connecting blockindicated as a whole at Z). This clip or block is made of sheet metal.It consists of an end plate 6 which fits against the end of the bar, andit has attached to it by a rivet 6 a disk 5 which fits within the end ofthe side bar. The plate is bent into rectangular form so as to provide aportion 7) which has a concave lower edge so as to fit and rest upon thebar as shown in Figs. 2 and 4. The ends of the plate are broughttogether, as shown at b b and are connected by a rivet or otherfastening b. The plate forms, as it were, a yoke, one arm of which restsupon the side bar and the other arm of which is in front of the bar withthe disk 6 fitting into the aperture therein. Upon the clips or hollowblocks 6, are placed the two end bars 0. Each end bar consists of astrip of angle iron, one web a of which rests flat upon the upper endsof the blocks, the other web 0 projecting upwardly. The angle bars aresecured in place by bolts (1 which are passed downwardly throughapertures in the web 0 and through apertures in the ends of the sidebars. In this way, the side bars, the end bars, and the hollow blocks orclips are secured rigidly together.

It will be observed that each upstanding web 0 is provided at regularintervals with inclined slots 0 for a purpose to be described.

The fabric consists, as stated, of flat helices e which are intercoiledat 6. Each helix extends transversely of the fabric, and its ends areconnected to the ends of the next adjacent helix by elongated links 6The helices, as shown in Figs. 1 and 2, are elliptical or flat. Eachhelix consists of a series of coils which have somewhat angular ends 6The end of one coil is interlocked, as at 6, with the end of the coil ofthe next adja cent helix. The apertures or slots 0 in the webs c areslightly inclined and are spaced so as to receive the ends 6 of thecoils of the end helix of the fabric. The coils of the end helix are allintroduced into the apertures, and through the coils is passed a rod orwire f which lies against the outer face of the web 0', so as to lockthe ends of the fabric securely to the end bars.

It will be observed that I have dispensed with the employment of springsconnecting the fabric with the end bars, and provide a yielding sanitarybed bottom which is of the simplest possible construction and with theleast number of independent parts.

Having thus explained the nature of my said invention and described away of constructing and using the same, although Without attempting toset forth all of the forms in which it may be made or all of the modesof its use, I declare that what I claim is 2- A bed bottom comprisingside bars, end bars each consisting of an angle iron having a verticalweb with diagonal slots at intervals and an inturned flat side securedto sheet metal blocks fastened to said angle iron and to the side bars,a fabric comprising transverse flat helices, the coils of which areinterlocked, the coils of the transverse end helices extending in theform of loops through said slots in the end bars, and a locking rodpassed through said loops and bearing against the outer face of saidweb. I

In testimony whereof I have aflixed my signature, in presence of twowitnesses.

GUY MAFERA.

WVitnesses:

P. W. PEZZETTI, M. B. MAY.

